WO2022033630A1 - Machine électrique comprenant un mécanisme de protection sur un joint soudé, et procédé d'assemblage de la machine électrique - Google Patents

Machine électrique comprenant un mécanisme de protection sur un joint soudé, et procédé d'assemblage de la machine électrique Download PDF

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Publication number
WO2022033630A1
WO2022033630A1 PCT/DE2021/100662 DE2021100662W WO2022033630A1 WO 2022033630 A1 WO2022033630 A1 WO 2022033630A1 DE 2021100662 W DE2021100662 W DE 2021100662W WO 2022033630 A1 WO2022033630 A1 WO 2022033630A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrical machine
holding element
wires
wire
sections
Prior art date
Application number
PCT/DE2021/100662
Other languages
German (de)
English (en)
Inventor
Andreas Ruppert
Original Assignee
Schaeffler Technologies AG & Co. KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2022033630A1 publication Critical patent/WO2022033630A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/0056—Manufacturing winding connections
    • H02K15/0062—Manufacturing the terminal arrangement per se; Connecting the terminals to an external circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/0056—Manufacturing winding connections
    • H02K15/0068—Connecting winding sections; Forming leads; Connecting leads to terminals
    • H02K15/0081—Connecting winding sections; Forming leads; Connecting leads to terminals for form-wound windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/06—Machines characterised by the wiring leads, i.e. conducting wires for connecting the winding terminations

Definitions

  • Electric machine with protective mechanism on a welded joint and methods of assembling the electrical machine
  • the invention relates to an electrical machine for a motor vehicle drive, with a coil component having a base body and a coil winding accommodated within the base body, and with a connection component connected to the coil winding, one end of a first wire of the coil winding being connected via a welded connection to one end of a second wire of the Connection component is connected. Furthermore, the invention relates to a method for assembling this electrical machine.
  • FIG. 5 shows a connection area between a first wire 7' and a second wire 10' on an electrical machine T.
  • the wires 7' and 10' are connected to one another via a welded connection 8'.
  • a welded connection 8' It has been found that during assembly or during operation of the electrical machine T, such large forces F can act on the welded connection 8' that the welded connection 8 may also be damaged.
  • a relative adjustment of the two wires 7′, 10′ by an angle W can be generated, which in turn causes a high bending load on the welded connection 8′. Breaking of the welded connection 8' can even lead to a total failure of the system.
  • this is achieved in that two sections of the two wires running towards the respective end are held/supported transversely to one another via a holding element.
  • Transverse means a direction transverse (preferably perpendicular) to an imaginary reference line extending from the section to the end of the same wire.
  • the holding element provides a simple means of protecting the wires from undesired tilting and consequently the welded connection from excessive bending stress. The existing connections of the wires are therefore much more robust.
  • the holding element serves as a protective mechanism both for assembly and for operation. This further simplifies assembly and significantly increases the fatigue strength of the electrical machine.
  • the retaining element is designed in such a way that it encompasses/clasps the sections together at least from two opposite sides.
  • the holding element can be fixed to the wires in a simple manner.
  • the holding element is a sleeve that (completely) surrounds/encloses the sections. This secures the wires to one another with the most stable connection possible.
  • the holding element is implemented as a clip (i.e. with a cross-sectional shape open on one side).
  • connection component has a busbar, for example in the form of a high-voltage terminal, and/or power electronics, for example having various electrical components.
  • the electrical machine is connected to other components as directly as possible.
  • the holding element is materially connected to at least one of the two wires, more preferably to each of the two wires.
  • this material connection is implemented as a welded connection. This keeps the retaining member firmly in the intended location of the two sections.
  • the retaining element is connected to at least one of the two wires via a spot weld, preferably to a spot weld on each of the two wires. This results in a connection of these components that is easy to automate.
  • the holding element is connected to at least one of the two wires, preferably even to both wires, by means of a caulking.
  • the holding element has a cross-sectional shape that at least partially follows the peripheral sides of the sections to be connected.
  • the invention relates to a method for assembling an electrical machine according to the invention according to at least one of the above-described versions, wherein first a first wire associated with the coil winding is connected with its first straight section, which adjoins one end of the first wire, next to a parallel to second section of a second wire of the connection component running along the first section, so that one end of the second section is arranged at the same height as the end of the first wire, after which a holding element is attached to both sections, so that the two sections in their transverse direction are fixed to one another by the holding element, and then the ends are connected to one another via a welded joint.
  • FIG. 1 shows a sectional view of an electrical machine according to the invention according to a preferred exemplary embodiment, with which a connection point between two wires of a coil winding and a connection component together with a holding element serving to secure the welded connection between these wires can be seen in detail,
  • Fig. 2 is a perspective view of the connection point already shown in Fig. 1,
  • Fig. 3 is a perspective view of the in Figs. 1 and 2, the holding element designed as a sleeve is inserted, whereby a cross-sectional shape of this holding element can be seen in more detail,
  • FIG. 5 shows a sectional view of an electrical machine designed according to the prior art.
  • the coil component 4 shows a basic structure of a coil component 4 of an electrical machine 1 implemented according to the invention.
  • the coil component 4 is implemented as a stator of the electrical machine 1, which is arranged fixed to the housing during operation.
  • the coil component 4 is alternatively implemented as a rotor in further embodiments according to the invention.
  • the cross-sectional shape 16 of the retaining element 13 is matched to the outer shape of the peripheral sides 14, 15 of the wires 7, 10 in such a way that it lies flat against the peripheral sides 14, 15 of the two wires 7, 10. Since the two sections 11 , 12 have a square cross-section (describe half of each), the holding element 13 consequently also has a square cross-section 16 . In this context it should be pointed out that other cross-sectional shapes 16 for the holding element 13 are also conceivable in further embodiments. So that shows With a circular cross-sectional shape of the sections 11, 12, the retaining element 13 preferably also has a circular or elliptical shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

L'invention concerne une machine électrique (1) pour un entraînement de véhicule automobile, comprenant un composant de bobine (4) ayant un corps principal (2) et un enroulement de bobine (3) logé à l'intérieur du corps principal (2) et comprenant un composant de liaison (5) relié à l'enroulement de bobine (3), une extrémité (6) d'un premier fil (7) de l'enroulement de bobine (3) étant reliée, par l'intermédiaire d'un joint soudé (8) à une extrémité (9) d'un deuxième fil (10) du composant de liaison (5), deux parties (11 12), s'étendant vers l'extrémité respective (6, 9), de chacun des deux fils (7, 10) étant maintenues transversalement l'une par rapport à l'autre par l'intermédiaire d'un élément de maintien (13). L'invention se rapporte en outre à un procédé d'assemblage de cette machine électrique.
PCT/DE2021/100662 2020-08-13 2021-08-02 Machine électrique comprenant un mécanisme de protection sur un joint soudé, et procédé d'assemblage de la machine électrique WO2022033630A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020121273.9 2020-08-13
DE102020121273.9A DE102020121273A1 (de) 2020-08-13 2020-08-13 Elektrische Maschine mit Schutzmechanismus an einer Schweißverbindung; sowie Verfahren zur Montage der elektrischen Maschine

Publications (1)

Publication Number Publication Date
WO2022033630A1 true WO2022033630A1 (fr) 2022-02-17

Family

ID=77499574

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2021/100662 WO2022033630A1 (fr) 2020-08-13 2021-08-02 Machine électrique comprenant un mécanisme de protection sur un joint soudé, et procédé d'assemblage de la machine électrique

Country Status (2)

Country Link
DE (1) DE102020121273A1 (fr)
WO (1) WO2022033630A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118739685A (zh) * 2023-03-31 2024-10-01 台达电子工业股份有限公司 定子及其端子固定结构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060232157A1 (en) * 2005-04-18 2006-10-19 Denso Corporation Structure of automotive alternator
EP2061133A2 (fr) * 2007-11-16 2009-05-20 Hitachi Ltd. Machine électrique tournante et système avec machine électrique montée dans un véhicule équipé de celle-ci
JP2013062901A (ja) * 2011-09-12 2013-04-04 Toyota Motor Corp ステータおよびこのステータを備える回転電機
EP3154159A1 (fr) * 2014-06-09 2017-04-12 Nissan Motor Co., Ltd. Procédé de fabrication d'une bobine de stator à fils plats

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1756501A (en) 1928-02-07 1930-04-29 Vincent G Apple Dynamo-electric machine
US8436506B2 (en) 2010-04-13 2013-05-07 GM Global Technology Operations LLC Electric motor assemblies and systems and methods associated with joining wires of electric motor assemblies
DE102016204935A1 (de) 2016-03-24 2017-09-28 Robert Bosch Gmbh Verschaltungsplatte für einen Stator einer elektrischen Maschine und Verfahren zum Herstellen einer elektrischen Maschine
JP6589936B2 (ja) 2017-05-31 2019-10-16 日立金属株式会社 配線構造

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060232157A1 (en) * 2005-04-18 2006-10-19 Denso Corporation Structure of automotive alternator
EP2061133A2 (fr) * 2007-11-16 2009-05-20 Hitachi Ltd. Machine électrique tournante et système avec machine électrique montée dans un véhicule équipé de celle-ci
JP2013062901A (ja) * 2011-09-12 2013-04-04 Toyota Motor Corp ステータおよびこのステータを備える回転電機
EP3154159A1 (fr) * 2014-06-09 2017-04-12 Nissan Motor Co., Ltd. Procédé de fabrication d'une bobine de stator à fils plats

Also Published As

Publication number Publication date
DE102020121273A1 (de) 2022-02-17

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